"Jennifer Lopez was really great - hot, cool, and funny," NPH wrote. "And well prepared! She gave me a few pointers. Here's one: http://yfrog.com/33kruhj"

J.Lo's new album, "LOVE," is due out in April 2010. She'll appear next on "Saturday Night Live," as both host and musical guest, on February 27, her second time hosting and third time as musical guest.